Home / 213,089.13-319,634.30-55,318.95

Finding the Fourth Proportional to 213,089.13, 319,634.30 and 55,318.95

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Solution

The fourth proportional to 213,089.13, 319,634.30 and 55,318.95 is: 82,978.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,089.13 : 319,634.30 = 55,318.95 : x
  2. Step 2: Convert to fraction form
    213,089.13/319,634.30 = 55,318.95/x
  3. Step 3: Cross multiply
    213,089.13x = 319,634.30 × 55,318.95
  4. Step 4: Simplify right side
    213,089.13x = 17,681,833,859.99
  5. Step 5: Solve for x
    x = 17,681,833,859.99/213,089.13
  6. Step 6: Final answer
    x = 82,978.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.